Fixes word-variants refs #3024

Author: JJ

doc/Type/Attribute.pod6

@@ -8,7 +8,7 @@
 
 In Perl 6 lingo, an I<attribute> refers to a per-instance/object storage slot.
 An C<Attribute> is used to talk about classes' and roles' attributes at the
-meta level.
+metalevel.
 
 Normal usage of attributes does not require the user to use this class
 explicitly.
@@ -119,7 +119,7 @@ The usual way to obtain an object of type C<Attribute> is by introspection:
     say $a.has_accessor;    # OUTPUT: «False␤»
 
 Modifying a private attribute from the outside is usually not possible, but
-since Attribute is at the level of the meta class, all is fair game.
+since Attribute is at the level of the metaclass, all is fair game.
 
 =head2 method name